Preparation method of variable color nanofiber film
A nanofiber film and color-changing technology, which is applied in fiber treatment, textiles, papermaking, non-woven fabrics, etc., can solve the problems of large performance impact, easy blockage of needles, low output, etc., and achieve simple preparation process, low cost, The effect of high yield
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[0029] Such as figure 1 As shown, the method for preparing a color-changing nanofiber membrane of the present invention includes the steps:
[0030] S1: Weigh the polymer with an electronic scale, dissolve it in an organic solvent, and fully dissolve it to obtain a polymer solution;
[0031] S2: Weigh the acid-base indicator of 4% to 6% of the solute mass of the polymer solution with an electronic weighing, and dissolve it in the above polymer solution to fully dissolve it to obtain a bubble electrostatic spinning solution;
[0032] S3: Set an appropriate spinning voltage and receiving distance, adopt bubble electrospinning to obtain nanofiber membrane on the receiving plate.
[0033] In the step S1, the high polymer is a water-insoluble high polymer such as polyacrylonitrile, polyvinylidene fluoride, polystyrene, polyethersulfone, or polylactic acid.
[0034] In the step S1, the organic solvent is N,N-dimethylformamide or N,N-dimethylacetamide or a mixed solvent of N,N-dimethylformami...
Example Embodiment
[0049] Example 1
[0050] The method for preparing a color-changeable nanofiber membrane includes the following steps:
[0051] (1) Weigh 2.5g polyacrylonitrile with an electronic weighing, and dissolve it in 25g N,N-dimethylformamide to fully dissolve;
[0052] (2) Weigh 0.15g of phenolphthalein with an electronic weighing and dissolve it in the above solution to obtain a bubble electrospinning solution;
[0053] (3) Bubble spinning: The spinning voltage is 20V, and the receiving distance is 20cm.
Example Embodiment
[0054] Example 2
[0055] The method for preparing a color-changeable nanofiber membrane includes the following steps:
[0056] (1) Weigh 3.5g polyvinylidene fluoride with an electronic weighing, and dissolve it in 25g N,N-dimethylformamide to fully dissolve;
[0057] (2) Weigh 0.175g of phenolphthalein with an electronic weighing, and dissolve it in the above solution to obtain a bubble electrospinning solution;
[0058] (3) Bubble spinning: The spinning voltage is 20V, and the receiving distance is 20cm.
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